Spring-hinge.



PATENTED MAY 31, 1904.

E. BOMMER.

SPRING HINGE APPLIOATION FILED APB.

3 SHEETS-SHEET 1 N0 MODEL.

HVVENTH AI'TUH/VEYS No. 761,057. PATENTED M AY3*1,1904.

' SPRING HINGE. APPLICATION FILED APB. Z, 1903.

I 3 'SHEETS-SHEET 2. v gy No MODEL.

PATENTED MAY 3l, V1994.

e.. BOMMER. SPRING EHNGE.v APPLIOATIONTILED APR. Z, 1903.

N0. MODEL.

3 SHEETS-SHEET 3.

fl r

w/r/VESSES Patented `May 31, 1904 PATENT OFFICE.

EMIL BOMMER, OF NEW YORK, N. Y.

SPRING-HINGE.

SPECIFICATION forming part of Letters Patent No. 761,057, dated Mayl,1904.

Application filed April 2,1903.

To all whom t may oon/cern..-

Be it known that I, EMIL BOMMER, acitizen of the United States, residingin New York, borough of Brooklyn, and State of 'New York, have inventedcertain new and useful Improvements in Spring-Hinges, of which thefollowing is a specification.

. This invention relates to improvements in single and double actingspring-hinges which are intended for use on light swing-doors of allkinds, such as screen-doors and the like, and which are of simple,cheap, and effective construction and readily attached to the doorframesand doors with which they are to be used; and for this purpose theinvention consists of certain details of construction and combinationsof parts, which will be fully described hereinafter and finally pointedout in the claims. i

In the accompanying drawings,.Figure 1 represents a front elevation of ascreen-door hung by my improved spring-hinges. Fig. 2 is a frontelevation of the spring-hinge drawn on a larger scale. Figs. 3 and 3 arerespectively a detail front view and a vertical transverse section onlline 3 8*, Fig. 3, of the retaining-seat for the wire spring used in myimproved spring-hinge. Fig. 4 is a front elevation of the spring-hinge,shown in a partlyopen position. Fig. 4a isa plan view of Fig.

4. Fig. 5 is a front elevation of the springi hinge, showing the door inan entirely-open Fig. 5a is a plan view of Fig. 5.

position. Fig. 6 is a detail view of the wire spring, shown detachedfrom the hingeiFig. 7, a front elevation of a double-acting spring-hingemade according to my improved construction; Fig. 8, a plan View of Fig.7; and Fig. l9, a horizontal section on line v9 9, Fig. 7.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, o o' represent the flanges of my improvedspring-hinge, which flanges are attached to the door-frame and door,respectively. rlhe anges cr a' are provided with webs w w', bent up,preferably, at right angles to the anges, and with pintlesockets I) atthe ends of said webs w w', said webs, iianges, and pintle-sockets beingpref- Serial No. 150,797. (No model.)

' erably stamped,by means of dies, from blanks of sheet-steel ofsuitable size andV thickness. The-ange a is provided at one end with aseat c, which is bent up from the stock of the iiange a, preferably fromthe stock forced out of the lower screw-hole of the same, as shown inFigs. 3 and 8a. At the opposite end of the flange a a bracket d is bentup from the web zo', which bracket is provided with a hole forsupporting one end e' of a wire spring e, by which the power for closingthe door is supplied. The bracket Z is made integral with the flange aand twisted, so as to be placed in horizontal position immediately abovethe upper pintle-socket ,but sidewise of the same, as shown clearly inplan view in Figs. 4a and 5u.

The wire spring e, by which the spring action is exerted on the swingingiiange co', is made of stout wire, one end e being made of inverted-Ushape and inserted into the hole of the bracket d, while its middleportion is bent into a coil @2, which is located near the bent-up seat cof the flange a and retained by the same. The opposite end e3 of thewire spring e is bent approximately parallel with the main portion orbody of the same 'in a direction toward the U-shaped end and insertedinto the pintlesockets of the flanges a @'so as to act as a pintle forthe same. The wire spring e is clearly shown as detached from the hingein Fig.4 6 in a position of rest in Fig. 2 and in a position of tensionin Figs. 4.and 5. It has the twofold purpose of serving as thetensionspring for the hinge and as a pintle for-connecting thepintle-sockets of the flanges. On opening of the door the wire spring isset to tension and causes the bent upper end e' of the same,'which isseated in the hole of the bracket d, to be moved in a downward directionin the bracket 0l. The upper edge of the bent-up web w is provided witha small recess f, as shown in Figs. 4 and 5, so as to permit the upperend e' of the wire spring e to clear said web without abutting againstthe same during the opening and closing of the door. When the door isplaced in a partly or entirely open position, it is retained in thisposition by the action of the wire spring, which assumes the positionshown inFigs. 4 and 4, 5 and 5L.

While being moved into either of these positions the upper end of thewire spring' e has passed over the lrecess f 0f the web fw and beyondthe axis of the pintle-sockets and forms a lock for holding the door inopen position. On closing the swing-door the upper end of the wirespring e is returned by the motion of its supporting-bracket Z back tothe other side of the axis of the pintle-sockets and is then returnedquickly by the tension of the spring into the closed position yshown inFigs. l and 2. As the coiled portion @2 of the wire spring e is retainedin fixed position by the bent-up lug c on the lower corner of the flangea and as the upwardly-bent lower end e3 of the wire spring e is heldstationary in the pintlesockets, the swing of the wire spring isconfined to that portion between the seat of the coil and the upper endof the spring. This portion of the spring is set to tension by theaction of the door onthe middle portion of the wire spring and forms,with the coil, the active part of the spring, by which the return orclosing motion of the door is produced after it has been set to tensionby the opening ofthe door. The flanges are provided with a number ofscrew-holes, according to their size, by which they are attached,respectively, to the doorframe and the Swing-door, the attaching of thehinges to the door-frame and door being not connected with anydifliculty. The same construction of wire spring is also adapted fordouble-acting spring-hinges, in which the front and rear springs areconnected by an intermediate plate p, as shown clearly in Fig. 9. Fromthis plate the brackets d, which rec eive the upper ends of the springsand the pintle-sockets b, are bent up in the same manner as in thesingle-acting spring-hinges, the lower ends of the wire springs beingused as the pintles for the pintle-sections of the hinges.

My improved spring-hinge for light swingdoors is of extremely simpleconstruction, being composed practically of three parts only-the twoflanges, of which one isprovided with the seat for the coiled portion ofthe wire spring and the other with a perforated bracket for the activeend of the spring, and the wire spring, the opposite or lower end ofwhich serves as the pintle connection for the pintle-sockets. Twospring-hinges are used for medium-sized doors, while for larger doorsthree may be employed. They are furnished in setswith vthefasteningscrews and attached by their flanges to the door-frame anddoor, respectively. The wire springs can be readily removed from theflanges for detaching the door by pushing the spring first in downwarddirection, so that the coil clears its seat, and then in upwarddirection until its 4upper end clears the hole of the bracket, afterwhich the end of the spring forming the pintle is removed from thepintle-sockets, the flanges separated, and the door removed withoutunscrewing the flanges. The wire springs are replaced in position in aninverse order by first inserting the pintle end of the spring in thepintlesockets, next inserting the bent upper end of the spring into thehole of the bracket, and then reseating the spring 0n the retaining lugor seat. To avoid the loss of the wire springs while the door isdetached or stored away, they should be replaced in their position inthe pintle-sockets and perforated brackets of the flanges fastened tothe door. As the flange, pintle sockets, the connecting web between theflange and pintle-sockets, and the bracket are bent up, by means ofdies, from one piece of sheet-steel, a very strong yet cheapspring-hinge is obtained, which is specially adapted for use with lightswing-doors of all kinds.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. A spring-hinge, consisting of a flange attached tothe door-frame and provided with a retaining-seat at one end, a flangeapplied to the door and provided with a perforated bracket at the endopposite the seat,said flanges being provided with pintle-sockets, and awire spring, the middle coiled portion of which is retained by the seat,while one end engages the perforated bracket and the other end thepintle-sockets, forming the pintle for the same, substantially as setforth.

2. A spring-hinge, consisting of two flanges, one attached to thedoor-frame and the other to the door, pintle-sockets bent up integrallywith said flanges, a bent-up retaining-seat at the end of one ange, aperforated bracket bent up integrally with the other flange at theopposite end of the same bent up from the same into a position sidewiseof the pintlesockets, and a coiled wire spring having bent end portionsadapted to connect the seat with the bracket and pintle-sockets, so asto act as a combined tension-spring and pintle for the flanges,substantially as set forth.

3. Aspring-hinge, consisting of two flanges for the door-frame and doorrespectively, provided with webs having pintle-sockets, a retaining-seaton one flange, a perforated bracket on the other flange, and a wirespring con necting the scat with the perforated bracket andpintle-sockets, the web of the door-frame flange adjacent the upper endof the wire spring being recessed to permit the clearance of the upperend of the spring over the upper end of said web, in opening and closingthe door, substantially as set forth.

4. A spring-hinge,consisting of flanges provided with pintle-sockets anda tension-spring bent up from one piece of spring-wire and provided witha straight main portion one end ICO of which is secured to one of theflanges, a In testimony that I claim the foregoing as ooil at the otherend of the main portion semy invention Ihave signed my name in prescuredto the other flange, and a straight end ence of two subscribingwitnesses.

portion bent up from the coiled portion ap- EMIL BOMMER. proximatelyparallel With the main portion of Witnesses:

the spring and passing through the pintle- PAUL GOEPEL,

sockets, substantially asset forth. HENRY J. SUHRBIER.

